Kohler K91 Service Manual page 36

Check float-to-float hinge tower clearance:
5 .
Invert the carburetor so the float tab rests on
the fuel inlet needle . Insert a
gauge between float and float h inge towers. If
the feeler gauge cannot be inserted , or there
is interference between the float and towers ,
file the towers to obtain the proper clearance .
Refer to Figure 6-1 5 .
6 .
Install the bowl gasket and baffle gasket . Posi­
tion baffle gasket so the inner edge is against
the float hinge towers.
7 . Install the fuel bowl so it is centered on the
baffle gaske t . Make sure the baffle gasket and
bowl are positioned properly to ensure a good
seal .
I nstall the bowl retaining screw gasket and
8 .
bowl retaining screw Torque screw to
lb.
Float
If
File
Necessary
Inverted Carburetor
Figure 6-1 5 . Checking Float Clearance.
I nstall the idle speed adjusting screw and
9 .
spring . I nstall the idle fuel and main fuel ad­
justing needles and spring s . Turn the adjusting
needles clockwise until they bottom
NOTE : The ends of adjusting needles are tapered
to critical dimensions. Damage to needles and
seats will result if needles are forced .
1 0 . Reinstall the carburetor t o the engine using a
new gasket .
11 . Adjust the carburetor as outlined under the
" Adjustment " portion of this section .
6. 1 0
01 0
feeler
. "
50/60 in.
0.010"
Feeler Gauge
(B.th S
Float Hinge Towers
(On Carburetor Body)
lightly .
WALBRO FIXED/ADJU STABLE
CARBURETOR
This section covers the idle adjustment , disassem­
bly , cleaning , inspection , repair, and reassembly
Walbro-built, side draft, fixed/adjustable
of the
main jet carburetors.
Idle Speed
Adjusting Screw
Figure 6-1 6. Fixed Main Jet Carburetor.
£
WARNING: Accidental Starts!
Before servicing the carburetor, engine, or equip­
ment, always remove the spark plug leads to prevent
the engine from starting accidentally. Ground the
leads to prevent sparks that could cause fires.
£
WARNING: Explosive Fuel!
Gasoline may be present in the carburetor and fuel
system. Gasoline is extremely flammable and its
vapors can explode if ignited. Keep sparks, open
flame, and other sources of ignition away from the
area to prevent the possibility of fires or explosions.
£
WARNING: Prevent Eye Injury!
Suitable eye protection (safety glasses, goggles, or
face shield ) should be worn for any procedure in­
volVing the use of compressed air, punches, ham­
mers, chisels, drills, or grinding tools.
Idle Fuel